Global Patent Index - EP 0529777 B1

EP 0529777 B1 19961002 - CVT Downshift control strategy to minimize slip at the drive pulley

Title (en)

CVT Downshift control strategy to minimize slip at the drive pulley

Title (de)

Rückschaltsteuerungsstrategie für ein stufenloses Getriebe zur Minimalisierung des Schlupfes an der Triebscheibe

Title (fr)

Stratégie de commande de rétrogradation pour une transmission à variation continue pour réduire le glissement à la poulie d'entraînement

Publication

EP 0529777 B1 19961002 (EN)

Application

EP 92306031 A 19920630

Priority

US 75206491 A 19910829

Abstract (en)

[origin: CA2071712A1] 91009 New methods for controlling an automotive continuously variable transmission (CVT) during downshifting such that chain-belt slippage will not occur. The relationship between the primary and secondary sheave forces is used to predict and control the primary force co that the primary clamping force is sufficient to prevent slippage.

IPC 1-7

F16H 61/00

IPC 8 full level

F16H 9/00 (2006.01); F16H 61/00 (2006.01); F16H 61/18 (2006.01); F16H 61/662 (2006.01)

CPC (source: EP US)

F16H 61/66259 (2013.01 - EP); F16H 2061/66277 (2013.01 - EP); Y10T 477/6203 (2015.01 - EP US); Y10T 477/62429 (2015.01 - EP US)

Designated contracting state (EPC)

DE FR IT

DOCDB simple family (publication)

US 5168778 A 19921208; CA 2071712 A1 19930301; DE 69214235 D1 19961107; DE 69214235 T2 19970206; EP 0529777 A1 19930303; EP 0529777 B1 19961002; JP H05196131 A 19930806

DOCDB simple family (application)

US 75206491 A 19910829; CA 2071712 A 19920619; DE 69214235 T 19920630; EP 92306031 A 19920630; JP 23037192 A 19920828